Those who are coming in summer might want to get a ticket from the Congresscritter to see the Friday evening dress parade at the Marine Barracks. It is NOT necessarily a safe neighborhood but once one has gotten into that area there are so many people and military that it is safe during that period.
For boys there is hardly a better thrill.
I have a retired Marine Lt.Col. who is a patient of mine and also happens to be a Congressional aide. I think he might be able to score me some tickets.